Color models and color processing for LCDs with RGB-LED backlight and/or quadruple color filter

Objective: For newer LCD display types, RGB-LEDs may be the light source allowing a colorful backlight. The color filters may consist of more than the RGB filter, for example RGBW or RGBY. The interaction between the backlight and the color filter will be modelled. Based on these specific models for the new LCD types, the RGB image data will be rendered for variable backlight and the quadruple subpixels. Through these color models and color processing, the power efficiency as well as the display brightness is to be increased. Also the color gamut may be extended. It is the base for a combination with 2D (gray) local dimming technology, also called as 3D (color) local dimming, which should increase the power efficiency additionally.